Evidence map›Paper›PMID 36182955›Full record

ArticleEye and vision (London, England)2022

Comparison of white-to-white measurements using four devices and their determination of ICL sizing.

Robert Edward T Ang, Edward Kenneth F Reyes, Fernando Amado J Ayuyao, Maria Isabel N Umali, Emerson M Cruz

Open access · diamondAbstract read
In one paragraph

Article in Eye and vision (London, England), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Pooled it
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  3. Repeatability of corneal diameter measured by Sirius versus IOLMaster 700 in myopic eyes: combined with consistency and relationship of sulcus-to-sulcus.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
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  10. Correlation of iris-ciliary angle with haptic position and vault after implantation of implantable collamer lens.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 2 countries.

Robert Edward T AngAsian Eye Institute, Phinma Plaza, Rockwell Center, 8Th Floor, 1200, Makati, Philippines. rtang@asianeyeinstitute.com.ORCID http://orcid.org/0000-0002-5035-2923
Edward Kenneth F ReyesCardinal Santos Medical Center, 10 Wilson St., Greenhills, 1502, San Juan, Philippines.
Fernando Amado J AyuyaoAsian Eye Institute, Phinma Plaza, Rockwell Center, 8Th Floor, 1200, Makati, Philippines.
Maria Isabel N UmaliAsian Eye Institute, Phinma Plaza, Rockwell Center, 8Th Floor, 1200, Makati, Philippines.
Emerson M CruzAsian Eye Institute, Phinma Plaza, Rockwell Center, 8Th Floor, 1200, Makati, Philippines.
Asian Eye Institute · PHSt. Jude Medical Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo compare the measurements obtained from the Orbscan II, IOLMaster 700, Pentacam AXL, and Castroviejo caliper and their effects on calculating the recommended implantable collamer lens (ICL) size and postoperative vault measurements.

methodsThis is a retrospective cross-sectional study of patients who underwent ICL surgery by a single surgeon from March 1, 2018 to July 31, 2021. Records were reviewed for the anterior chamber depth (ACD) and white-to-white (WTW) measurements obtained from the Orbscan II, IOLMaster 700, Pentacam AXL, and Castroviejo caliper (WTW only). These were used to calculate the recommended ICL size. The actual ICL size implanted, and vault measurements obtained one month postoperatively were also collected.

resultsOne hundred seven eyes with a mean age of 27.9 ± 7.7 years were included in the study. Mean WTW measurements were significantly different between devices (P < 0.0001), with the IOLMaster 700 having the highest value (12.14 ± 0.04 mm) and the caliper having the lowest value (11.45 ± 0.04 mm). Mean ACD measurements were the lowest in Orbscan II (3.12 ± 0.25 mm) and the highest in Pentacam AXL (3.16 ± 0.24 mm). The Pentacam AXL produced an ICL size similar to the Orbscan in 69.2% of eyes. The IOLMaster yielded an ICL measurement one size larger than Orbscan-based calculations in 64.5% of eyes. Using the Orbscan WTW and ACD, the desired vault of 0.25 to 0.75 mm and 0.25 to 1.00 mm was achieved in 70% and 91% of eyes, respectively. Substituting caliper WTW to IOLMaster 700 or Pentacam AXL WTW increases the percentage of achieving the desired vault to 80%, similar to the Orbscan.

conclusionsThe Orbscan II, IOLMaster 700, and Pentacam AXL cannot be used interchangeably for calculating ICL sizing. Combining the WTW from caliper measurement with the ACD of the IOLMaster 700 or Pentacam AXL could improve ICL sizing and achieve a higher percentage of eyes with the desired vault.

Indexed as

CaliperICL vaultIOLMaster 700Orbscan IIPentacam AXL

Identifiers

PMID36182955
PMCPMC9526955
OpenAlexW4298342342

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.